The act of performing oral sex on a female with a yeast infection while she is driving a motor vehicle. Basically the same thing as "Road-Head" except it is with a female driver and she has enough yeast to bake bread in her cooter.

I gave my girl Road-Bread on the way to the beach. I leaned over under the steering wheel and gave her head. The car was then filled with the sweet aroma of a honey wheat "King's Hawaiian Roll."